signal callback delegate or function to connect
void callback(gdk.device.Device device, gdk.seat.Seat seat)
device the newly added gdk.device.Device. (optional)
seat the instance the signal is connected to (optional)
Yes.After to execute callback after default handler, No.After to execute before (default)
Signal ID
Connect to DeviceAdded signal.
Emitted when a new input device is related to this seat.